invalidate

From Longman Dictionary of Contemporary Englishinvalidatein‧val‧i‧date /ɪnˈvælədeɪt/ ●○○AWL verb [transitive]1USE somethingto make a document, ticket, claim etc no longer legally or officially acceptableFailure to disclose all relevant changes may invalidate your policy.2WRONG/INCORRECTto show that something such as a belief or explanation is wrongLater findings invalidated the theory.→ See Verb table

Examples from the Corpus

invalidate• If we look closely at Professor Thomson's argument, we see that his conclusion is invalidated by a number of factualerrors.• None of the more recent views invalidates Hahnemann's originaldiscoveries or teachings.• The elements of Christianity that come from older beliefs do not necessarily invalidate the religion.• The Educational Testing Service invalidated the scores of 18 students.From Longman Business Dictionaryinvalidatein‧val‧i‧date /ɪnˈvælədeɪt/ verb [transitive]LAW to make a contract, agreement, document etc invalidFailure to follow the instructions correctly could invalidate the guarantee.The Judge’s ruling invalidated the company’s patent. —invalidation noun [uncountable]The Court of Appeals refused to reconsider its previous invalidation of the contract.→ See Verb table